"Aluminium scenario" Essays and Research Papers

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    Importance of Metals

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    known as an ore. The method used to extract metals from ores depends on the reactivity of that metal. Some unreactive metals can even be found in the native state‚ like gold. On the other hand‚ most metals are too reactive to exist on their own like aluminium‚ which has to be extracted using a method called electrolysis. And some moderately reactive metals that are in the middle of the reactivity series can be extracted using reduction of oxides like iron. Gold is not found in a mixture or

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    Mod 6 Easa B1.1

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    Module 06 - EASA Questions 1. The property of a metal to resist deformation when subjected to a tensile load and is proportional to the maximum stress required to cause fracture: a. Tenacity. b. Toughness. c. Tensile strength. 2. The ability of a metal to resist wear and penetration is defined as: a. Hardness. b. Toughness. c. Bearing strength. 3. What is the strain of a 1.2m tube which as extended 15mm? a. 0.0125. b. 0.0125Nm-2. A Load (N) B C D Extension (m) c

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    GCSE

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    1 (a) In this apparatus hydrochloric acid is decomposed by passing a direct electric current through it. Chlorine and hydrogen are formed. (i) Give the name of this process in which substances‚ such as hydrochloric acid‚ are decomposed by a direct electric current. (1) electrolysis (ii) Describe what happens when a burning splint is applied to a mixture of hydrogen and air in a test tube. (2) (b) (i) Complete the sentence by putting a cross ( ) in the box next to your answer. An acid

    Free Hydrogen Oxygen Aluminium

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    1. INTRODUCTION SilCote aluminum pigment is manufactured by mixing aluminum paste with Monomer‚ SR-350 (trimethylolpropane trimethancrylate) and additive‚ Z-6040 which is an epoxy-functional Silane (3-glycidoxypropyl trimethoxy silane)‚ in a jacketed mixer with the presence of catalyst‚ ABIN (azo-bis-isobutyronitrile). White spirit‚ acts as the carrier solvent in the process. 2. PROCESS FLOW The aluminum paste is first loaded into the jacketed mixer‚ followed by introducing a pre-determined

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    mechanisms for the strengthening of metal alloys. It influences some properties of the alloys such as strength‚ hardness and ductility. The purpose of this experiment was to test the effect of temperature and aging time on strength and hardness of 6060 aluminium alloy samples that have roughly similar compositions by subjecting them to different temperatures for different periods of time. The experiment showed that the strength and hardness of the samples increased when they were allowed to age for longer

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    extraction of metals

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    in the compound gain electrons to become atoms of the elements. METAL METHOD OF EXTRACTION Potassium Sodium Lithium Calcium Magnesium Aluminium K Na Li Ca Mg Al These metals are too reactive for ordinary chemical reducing agents like carbon to be used. They are obtained by electrolysing their molten compounds. For aluminiumaluminium oxide (from the ore Bauxite) is used For Group 1 and 2 metals‚ the metal chlorides are usually used. Electrolysis is a very expensive process because

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    residual elements were either present within the raw materials used in the production process e.g. iron ore and scrap steel additions‚ or they were added in the production process for a specific purpose‚ e.g. deoxidization by means of silicon or aluminium. Hence they are called residual elements to distinguish them from alloying elements that are deliberately added according to specified minimum amounts. The term “cleanliness” refers to the amounts of various phases such as oxides‚ sulphides and silicates

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    uk/schools/gcsebitesize/science/add_aqa_pre_2011/atomic/differentsubrev5.shtml Brooks‚ W Clark‚ J. (2005). Copper. Retrieved from Chem Guide: http://www.chemguide.co.uk/inorganic/extraction/copper.html Creamer‚ K Davyson‚ S. (2002). Aluminium. Retrieved from Aluminium: http://sam.davyson.com/as/physics/aluminium/site/ Macmillan Mazur‚ L. (2007). Chemical Elements. Retrieved March 19‚ 2013‚ from Chemistry Explained: http://www.chemistryexplained.com/elements/C-K/Gold.html Prices‚ C TMS‚ A. (2013). Bir Umm Fawakhir: Insights

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    Organisational Behaviour. The Volta Aluminium Company Limited (VALCO) is an aluminium reduction facility (smelter) located in the industrial seaport city of Tema‚ east of the capital city of Accra. VALCO was originally jointly owned by Kaiser Aluminium and Chemical Corporation (KACC) - 90% and Reynolds Metals Company .The Government of Ghana purchased the 90% shares of KACC in October 2004 and subsequently completed acquisition in June 2008. Therefore‚ currently VALCO is solely owned by the

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    Buckling of Struts

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    the casting. When doing this all vertical edges must be tapered as to make it easier to lift the pattern out of the mould. - Contraction allowances have to be added to the pattern because it shrinks in size in all dimensions. In this case it’s Aluminium‚ which has a contraction allowance of 1.3%. - Machining allowance: Castings are usually machined so that they fit perfectly with mating components. So therefore extra material should be added for machining. This can range from 1 - 35mm. - The pattern

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